Advanced Design - Featuring anti-pronation Biomechanical Reinforcement Technology (BRT) and a cushioning PU+ gel base to help control over-pronation, provide superior levels of shock absorption and reduce stress on the feet, knees and lower back Excessive stress. FIT FOR ALL TYPES OF SPORTS These versatile, high-quality orthopedic athletic insoles can be used in any athletic shoe, as well as walking boots, ski and snowboard boots, work boots and more. HELP REDUCE PAIN - Our best-selling athletic insoles are proven effective at helping reduce pain and increase comfort while walking and standing. Arch Support: High arch support designed insoles provide robust functionality to balance the stress-bearing structure of the foot, providing a convenient and extremely soothing solution for patients with flat feet, runner's knee, shin splints and Achilles tendonitis. Size: XS: 37-39 S: 40-42 M: 43-45 L: 46-48